Click for larger image and other views Image is representative of the product family. Select individual products in the table below for more specific images and product specifications

How can we improve our images or Product Specifications?

Lovejoy/Sier-Bath Gear Coupling, F Type, Flanged Sleeve Coupling Flex Hub

Be the first to review this item

Product Specifications
Flange Type
Material Type
Carbon Steel
Brand Name
System of Measurement

This item is no longer available

These items ship for FREE with 2-Day Shipping on orders over $50. (Details)

Want it delivered on Mon, Dec 1? Order in-stock items in the next 1 day 7 hrs 35 mins and choose One-Day Shipping at checkout.

  • Share
Currently showing 1-20 of 87 Next 20 »
Coupling Size Bore A Diameter Maximum Rotational Speed ASIN

The Amazon Standard Item Number (ASIN) uniquely identifies
the item in the (and Amazon) catalog.


If an item is currently out of stock, but has an estimated lead time, you can place an order now and we will ship it as soon as it is available.
You can also order more than we currently have in stock.
Read more about back orders in our help section.

All All All      
Currently showing 1-20 of 87 Next 20 »
F1 0.875" 9000 rpm B004QWZZTY yes $80.00 Buy Options
F1 1.125" 9000 rpm B004QWZZVW yes $67.13 Buy Options
F1 1.5" 9000 rpm B004QWZZVC yes $80.00 Buy Options
F1 1.375" 9000 rpm B004QWZZQM yes $99.08 Buy Options
F1 1.375" 9000 rpm B004QWZZV2 yes $80.00 Buy Options
F1 1.25" 9000 rpm B004QWZZUS yes $80.00 Buy Options
F1 1" 9000 rpm B004QWZZU8 yes $20.46 Buy Options
F1 0.75" 9000 rpm B004QWZZTO yes $80.00 Buy Options
F1 1.625" 9000 rpm B004QWZZQ2 yes $99.08 Buy Options
F1 1.37" 9000 rpm B004QWZWX8 yes $80.00 Buy Options
F1   9000 rpm B004QWZXDC yes $57.00 Buy Options
F1 1.625" 9000 rpm B004QWZZVM yes $80.00 Buy Options
F1 1.125" 9000 rpm B004QWZZUI yes $80.00 Buy Options
F1 1.25" 9000 rpm B004QWZZQC yes $99.08 Buy Options
F1.5 1.875" 8250 rpm B004QOANZI yes $104.00 Buy Options
F1.5 1.125" 8250 rpm B004QWZZLM yes $124.93 Buy Options
F1.5   8250 rpm B004QOANEE yes $78.00 Buy Options
F1.5 1.5" 8250 rpm B004QWZZRQ yes $112.01 Buy Options
F1.5 1.625" 8250 rpm B004QWZZS0 yes $104.00 Buy Options
F1.5 1.375" 8250 rpm B004QWZZTE yes $89.13 Buy Options

Key Features

  • For use with Sier-Bath F type flanged sleeve gear coupling assembly (sold separately)
  • AISI 1045 steel for strength and durability
  • Interference fit and keyway for secure attachment to shaft
  • Allows for angular misalignment of up to 1.5 degrees per hub
  • Fully crowned teeth for larger contact area and lower stress under misaligned conditions

Product Description

This Lovejoy F Type flex hub is made of steel and is intended for use as a component of a Sier-Bath flanged sleeve gear coupling (sold separately). This hub uses an interference fit and a keyway for a secure attachment to the shaft and is made of American Iron and Steel Institute (AISI) 1045 steel for strength and durability. The hub teeth are fully crowned for a larger contact area with the sleeve teeth and lower stress under misaligned conditions, which allows for angular misalignment of up to 1.5 degrees per hub. The hub also accommodates parallel and axial misalignment of the attached shafts. Gear couplings, a type of flexible coupling, use gear teeth on hubs and sleeves to transmit torque and offset rotational misalignment, and are suitable for use in applications involving extended distances between shaft ends, such as metal rolling mills and paper mills.

Flexible couplings are used to link two rotating shafts that are not aligned in order to transmit the rotational power, known as torque, from one shaft to the other. Most flexible couplings consist of two hubs and a middle assembly; each hub attaches to a shaft while the middle assembly flexes between the hubs to accommodate the misalignment of the two shafts. Shaft misalignments are generally either parallel or angular and cause complications to transmitting rotational power from one shaft to another in the form of stresses, loads, vibrations, and other forces, which vary from one type of misalignment to another. Flexible couplings are used in a broad range of applications, such as in motor vehicles, conveyors, escalators, agricultural, forestry and mining equipment, aeronautics, robotics and space exploration, among others.

Lovejoy manufactures flexible couplings, universal joints, variable speed drives, and other transmission and mechanical power products. The company, founded in 1900, is headquartered in Downers Grove, IL.

How can we improve our Product Description?

Customer Reviews

There are no customer reviews yet.

Be the first to review this item

Go to the HomePage

Order by Phone
M-F 8am-8pm ET, Sat-Sun 8am-5pm ET 800-220-4242

My Account| Returns| Help

Website Feedback| Contact Us| Sell on AmazonSupply| Become an Affiliate

Privacy Notice| Conditions of Use

Follow Us 

© 2014, Inc. and its affiliates.